关键词: 玻璃油墨;无铅玻璃粉;汽车后挡玻璃;成膜温度;耐酸性

Abstract: A kind of SiO2-Bi2 O3-ZnO lead-free glass with softening temperature of 575 ℃ was prepared for the glass ink. The mobility of glass powders with different composition were compared by button experiment. The glass powder with the best mobility performance was adapted as raw materials to prepare glass ink and the influence of glass powder contents on the quality of glass ink was investigated. Finally, the optimized ink with SiO2-Bi2 O3-ZnO lead-free glass was applied to fabricate the black coating on the backlight of automobile glass and its performance was compared with that of the commercial product by Johnson Matthey company of Netherlands. The structure and thermal properties of glass powders and glass ink coating were characterized by differential thermal analysis (DTA ),X-ray diffraction (XRD ), scanning electron microscopy (SEM)and thermal expansion analysis. The experimental results showed that the SiO2-Bi2 O3-ZnO glass powder has good glass forming ability. The glass ink with 60% lead-free glass powders could form the thin film when sinteres at 680 ℃ for 1. 5 min,which meet well with the requirements of production technology of the backlight automobile glass. The coating film shows excellent glossiness,acid resistance and anti-adhering resistance.

Key words: glass ink;lead-free glass powder;backlight automobile glass;film forming temperature;acid resistance